Dr. Salem was president of the Lebanese Cancer Society from 1972 to 1986. He conducted many campaigns against smoking and held public education campaigns related to the early diagnosis and detection of cancer.
From 1975 to 1985, he was Secretary General of the Federation of Middle East Cancer Organizations, which was part of the International Union Against Cancer network.
For the past eight years, Dr Salem has served on several task force committees and ad hoc committees formed to advise the President of the United States on health issues.